Luminance enhancement film, backlight module and liquid crystal display device

A luminance enhancement film, comprising:

• a support substrate having a first surface and a second surface opposite to the first surface;
• a brightness enhancement layer, wherein the first surface of the support substrate supports the light enhancement layer;
• and
• a light diffusing layer having a third surface and a fourth surface opposite to the third surface, wherein the third surface of the light diffusing layer is disposed on the second surface of the support substrate, wherein the glass transition temperature (Tg) of the light diffusing layer is larger than the glass transition temperature of the support substrate.

A luminance enhancement film, comprising:

• a support substrate having a first surface and a second surface opposite to the first surface;
• a brightness enhancement layer, wherein the first surface of the support substrate supports the brightness enhancement layer;
• and
• a light diffusing layer having a third surface and a fourth surface opposite to the third surface, wherein the third surface of the reinforcing layer is disposed on the second surface of the support substrate, wherein the light diffusing layer comprises:
• a continuous phase;
• and
• a disperse phase, wherein at least one portion of the disperse phase is disposed in the continuous phase for diffusing the light entering the light diffusing layer, wherein the glass transition temperature (Tg) of the continuous phase is larger than the glass transition temperature of the support substrate.